* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-light: rgba(255, 255, 255, 0.95);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.15);
    --border-radius: 20px;
    --border-radius-sm: 12px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -1;
}

.background-gradient::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    top: -300px;
    right: -300px;
    animation: float 20s infinite ease-in-out;
}

.background-gradient::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    bottom: -200px;
    left: -200px;
    animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(5deg); }
    50% { transform: translate(-20px, 20px) rotate(-5deg); }
    75% { transform: translate(20px, 20px) rotate(5deg); }
}

.container {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-image-container {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-image {
    max-width: 120px;
    max-height: 120px;
    object-fit: contain;
    display: block;
}

.logo-image.circle {
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.logo-image.square {
    border-radius: 15px;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.logo {
    color: white;
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
    font-weight: 300;
}

.card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.6s ease-out;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.glass-effect {
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    background: rgba(102, 126, 234, 0.08);
    padding: 8px;
    border-radius: var(--border-radius-sm);
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
}

.tab-btn:hover {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
}

.tab-btn.active {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: var(--border-radius-sm);
    font-size: 15px;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-group .hint {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.btn {
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

.result-box {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-radius: var(--border-radius-sm);
    border: 2px solid rgba(102, 126, 234, 0.1);
    animation: slideIn 0.4s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-box h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 20px;
}

.info-item {
    display: flex;
    padding: 12px 0;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item .label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 100px;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-badge.suspended {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.footer {
    text-align: center;
    margin-top: 30px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: var(--border-radius-sm);
    color: white;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: translateX(400px);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
    max-width: 350px;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

.toast.error {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
}

.toast.info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .container {
        max-width: 100%;
    }
    
    .card {
        padding: 25px 18px;
        border-radius: 16px;
    }
    
    .header {
        margin-bottom: 30px;
    }
    
    .logo {
        font-size: 32px;
        gap: 12px;
    }
    
    .logo-icon {
        font-size: 38px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .tabs {
        gap: 6px;
        padding: 6px;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .form-group label {
        font-size: 13px;
    }
    
    .form-group input {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 15px;
    }
    
    .result-box {
        padding: 20px;
    }
    
    .result-box h3 {
        font-size: 18px;
        margin-bottom: 15px;
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px 0;
    }
    
    .info-item .label {
        min-width: auto;
        margin-bottom: 5px;
        font-size: 13px;
    }
    
    .info-item .value {
        font-size: 14px;
        word-break: break-all;
    }
    
    .status-badge {
        font-size: 12px;
        padding: 3px 10px;
    }
    
    .footer {
        font-size: 13px;
        margin-top: 25px;
    }
    
    .toast {
        right: 10px;
        left: 10px;
        top: 15px;
        max-width: none;
        font-size: 14px;
    }
    
    .background-gradient::before {
        width: 400px;
        height: 400px;
        top: -200px;
        right: -200px;
    }
    
    .background-gradient::after {
        width: 300px;
        height: 300px;
        bottom: -150px;
        left: -150px;
    }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .card {
        padding: 20px 15px;
        border-radius: 14px;
    }
    
    .header {
        margin-bottom: 25px;
    }
    
    .logo {
        font-size: 28px;
        gap: 10px;
    }
    
    .logo-icon {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 14px;
    }
    
    .tabs {
        gap: 5px;
        padding: 5px;
    }
    
    .tab-btn {
        padding: 8px 12px;
        font-size: 13px;
        border-radius: 8px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group label {
        font-size: 12px;
        margin-bottom: 8px;
    }
    
    .form-group input {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .form-group .hint {
        font-size: 12px;
        margin-top: 6px;
    }
    
    .btn {
        padding: 11px 18px;
        font-size: 14px;
    }
    
    .result-box {
        padding: 15px;
        margin-top: 20px;
    }
    
    .result-box h3 {
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .info-item {
        padding: 8px 0;
    }
    
    .info-item .label {
        font-size: 12px;
        margin-bottom: 4px;
    }
    
    .info-item .value {
        font-size: 13px;
    }
    
    .status-badge {
        font-size: 11px;
        padding: 2px 8px;
    }
    
    .footer {
        font-size: 12px;
        margin-top: 20px;
    }
    
    .toast {
        padding: 12px 18px;
        font-size: 13px;
    }
}

/* 加载动画 */
.loading {
    pointer-events: none;
    opacity: 0.6;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}